Concrete-floor structure.



'PATENTED NOV. 19 1907.

lNVEFdTOR F. H. DANIELS. CONCRETE FLOOR STRUGTURE.

APPLICATION FILED JUNE 2, 1906.

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s T e FRED H. DANIELS, OF WORCESTER, MASSACHUSETTS.

CON CRETE-FLOOR STRUCTURE.

Specification of Letters Patent.

Patented Nov. 19, 1907.

Application filed June 2,1906- Serial No. 319,841.

To all whom. it may concern:

Be it known that I, Fem) H. DANIELS, of Worcester, \Vorcester county,Massachusetts, have invented a newend useful Concrete-Floor Structure,of which the following is a full, clear, and exact description,referones being bad to the accompanying drewings, forming part of thisspecification, in

Figures 1, 2, 3 and 4: are vertical sections of concrete floorstructures showing dilferent 'embodiments'oi. my invention.

strength. The reinforcement consists of bay, which would be liable tocrack.

Wires, or wire fabric stretched over supporting beams, ond brought downand tier from below between the beams, before putting on the concrete,sons to form approximately catenary curves.

In the forms of Figs. '1 and 2, the wires or fabric 2 is laid directlyonsteel beams or steel strips or bars 3, resting on the floor beams 4, andembedded in the concrete 5. The beams 4 are surrounded by the concretebeams 6 which are preferably formed with tapering lateral surfaces 7 inorder .to give a shorter floor span, and increase the carrying In theform of Figs.

capacity of the door. 3 end 4, the fabric 2 beamed.

When one of the boys or sections between the floor beams is heavilyloaded, the floor, which is a continuous girder for the whole length ofthe building, is liable to buckle up wardly in the next boy-if there isless load thereon. This would produce a tension in the top portion ofthe concrete of the unload p d o prevent this, I employ the wire fabric8 forming another layer extending through the lower part of the floor. I

In Figs. 1. and 3 the ends of the fabric sec extends above the v tions 8are buried in the concrete at the bases of the floor beams; while inFigs. 2 and; the ends are embedded near the tops of the floor beams. Inali. cases the central portion of the added fabric layer is tied to theupper reinforcing layer between the beams and preferably at the centerof each bay. This added layer ties down the main reinforcement at thecenters of the s ans, and acts as a reinforcing tension mcm ier, whichprevents the weakness above described.

Various modifications may be made with in the scope of my invention ft-Sdefined by the claims, since What I claim is:

1. A concrete floor structure having beams, and a motel reinforcementhaving both compression and tension members, the same con-- sisting ofupper flexible reinforcements embedded in the concrete and extendingover the beams, and lower flexible reinforcements tied to the upperreinforcements atthe con tral portion of the floor span, substantiallyas described.

2. A concrete floor structure having metal beams embedded in theconcrete beams which extend below the intermediate portions of the floorstruc turc, and a metal reinforcement for said concrete structure havingboth compression and tension members, the same consisting of up orflexible metal reinforcements e'mbeddct in the concrete and extendingover the beams, and lower flexible reinforcements tied to the upperreiuforcc ments at the central portion of the floor spans, and havingtheir end portions carried down'wardly into the: concrete beams,substantiel'ly as described.

3. A concrete floor structure having metal beams embedded in theconcrete beams which extend below the intermediate portions of thefloor, supporting members resting on the metallic beams, and a metalreinforcement for said concrete structure having both compression andtension members, the same consisting of upper flexible reinforcementsextending over the upper edges of the supporting members and near thelloor surface at such )oints, end lower reinforcements tied to depressedportions of the upper reinforcements at the central portions of thefloor spans, substantially as described.

In testimony whereof, I have hereunto set my hand.

FRED H. DANIELS. Witnesses:

A. F. BACKLIN, TEOS. MAonUFF.

